Improvement in railroad-signals



2 Sheets-S heet I.

, R. L.'KI'LPATBIGK. Railroad-Signal.

Patented March 30,1875.

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. Railroad-Signal. N0.161,519, Patented March 30,1875.

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'Nrrnn ROBERT L. KILPATRIOK, OF SPRINGFIELD, OHIO.

IMPROVEMENT IN RAILROAD-SIGNALS.

Specification forming part of Letters Patent N 0. 161,519, dated March30, 1875 application filed December 29, 1874.

To all whom it may concern:

Be it known that I, R. L. KLLPATRIGK, of Springfield, Clark county,Ohio, have invented an Improved Railroad Signaling Mechanism, of whichthe following is a specification:

Figure 1 is a side elevation; Fig. 2, a series of detail side viewsFigs. 3, 4, and 5, elevations (in section) of the hollow signalpost andits mechanism.

The invention will first be fully described, and then pointed out in theclaims.

As a train of cars approaches a station, a wheel, Y, strikes an arm, P,whose hub 19 is loose on shaft 0, but is locked by projections 19, thatfit into notches r of a sliding clutch, It, turning with said shaft.When the shaft 0 is thus rocked, its arm N turns the connected lever M,thereby pulling the wire L, that is attached to the crank-shaft 7c. Thelatter is connected, by a wirefk, with a loose arm, H, on a rock-shaft,I, where is also located a rigidly-attached angle-lever, G, in which isthe vertically-arranged spring-catch F, beveled on its free end, and towhich is connected a retracting-spring, g. The rocking of shaft I causesthe catch F to turn the lever E, (that ordinarily rests on a bar, E1thereby turning the armed rock-shaft G D, which acts upon thehammer-shaft, and thus draws back the hammer B. As soon as the catch Fceases to carry the short end of lever E, the spring of hammer-shaftcauses the hammer to strike the bell A, and thus give the alarm.

When the shaft I is rocked by the approaching car-wheel, a rear arm, 2',is elevated, pulling the wire 1, lifting the catch it, and depressingits forward end, so as to allow loose arm H to be raised by a wire, G,actuated by a spring, F, at the top of hollow post B. This wire andspring are attached to a lever, IE at one end, while the other end ofsaid lever works in and lifts an arm, D, rigidly attached to arock-shaft, A, that carries the signal-card O. The latter is thus throwndown at the same time that the alarm is sounded. As soon as thecar-wheel has left the treadles P Q, the spring g throws back thecrank-lever G, with the loose arms H, that rest upon its'pins a: so,when the catch F resumes its position behind the short lower arm of 1cver E, and, in turning back shaft I, depresses the arm i, that connects,by wire I, with the catch-lever h. The car-wheel now, passing over thetreadle H at the station, rocks the shaft h, and, with its rigid arm Hthat has a side hook at the end, bears down the loose arm H until it haspassed the spring-catch h, and is held on the under side thereof. Thesignal is now ready to be operated again by a train coming from eitherdirection, as one wire, It, connects with a treadle mechanism onopposite sides of the station. The wire m or other flexible connectionbetween the anglelever Gr and weight g, may be employed by passing itover pulleys W, to retract the lever.

Inorder to prevent the wheel from operating the treadle after a trainhas passed the station, I interpose between the clutch mechanism p p andIt 1" the loose hub q of a treadle, Q, making on it and the sliding hubIt corresponding but reversed inclines b b. When the cars have passedthe station they will first strike the treadle Q, which, turning looselyon shaft 0, will, by the inclines b I), slide the part B from the one19, disconnect them, and allow the treadle G to be turned loosely on theshaft, thus preventing any sound of the alarm.

It will be observed that the wire L passes under apulley, t, on outerend of the long arm of an an gle-lever, S, while the other end of thelever is provided with a spring-shaft, T. The wire it, connecting theupper end of the short arm of angle-lever, after passing under a pulley,it, extends to some point or fastening, which may, if desired, beadjustable. The spring-pressure thus brought to bear upon the wire,although not very great, will keep it taut under all ordinarycircumstances.

\Vhat I claim as new is 1. The combination, with a shaft, 0, thatoperates an alarm mechanism, of the treadles P Q, having hubs p p q I),and the springpre'ssed sliding part-clutch R r b, arranged to operate inthe manner described.

2. The combination, with wire L, of the angle-lever S, having pulley t,spring-shaft T, and holding-wire t applied as and for the purposespecified.

3. The combination, with hammer-shaft, of the armed shaft 0 D, lever E,cross-bar E were an gle-iever G, having spring-catch F, shaft I, havingrigid hook-arm H the Wire G, spring arm H, and wires 70 L extending totreadle as F, lever E slotted arm 1), and signal-card and for thepurpose described. shaft A, as and for the purpose specified.

4:. The combination of loose arm H shaft ROBERT L. KILPATRIOK.

I, having arm 15, the wire 1, and spring-catch \Vitnesses: lever h,asjand for the purpose set forth. ROBERT T. LANG,

5. The combination of treadle H shaft h, J. R. GUY.

